Apply suggestions from code review #133

Job	Run time
🚧 Build SPAdes	3m 33s
Full run M.ruber JGI lane 9	5m 20s
Multicell B.cereus TruSeq 100x	11m 2s
IonTorrent E.coli K12	36m 51s
Contigs E.coli JGI lane 7	3m 51s
Nextera L.monocytogenes	1m 5s
Mate-pairs B.faecium	2m 9s
PacBio M.ruber	4m 9s
plasmidSPAdes C.callunae	7m 39s
Saves E.coli UCSD lane 1	9m 17s
Single-cell P.heparinus JGI lane 7	8m 18s
Single reads E.coli Deeptrench	1m 37s
metaSPAdes JGI 150	15m 11s
metaviralSPAdes ERR525599	15m 7s
Saves E.coli 100K	47s
	2h 5m 56s

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